Steel puller



Oct. 30 1923. 1,472,524

' W. HOSKIN STEEL FULLER Filed Jan. 8, 1918 @1391], a 6 j] I I j 16 J19, Z] Q a abhor mu;

Patented Get. 30, 1923.

WILLIAI/I HOSKIN, OF DENVER, COLORADO, ASSIGNOR TO THE DENVER ROCK DRILIK MANUFACTURING COMPANY, OF DENVER, COLORADO, A CORPORATION OF DELA WARE.

STEEL FULLER.

Application filed January 8, 1918. Serial No. 21 0,913.

To all whom it may concern:

Be it known that I, WILLIAM HosKrN, a citizen of the jUnited States, residing at Denver, in the county of Denver and State of colorado, have invented certain new and useful Improvements, in Steel Pullers, of which the following is a specification.

The present invention relates more particularly to that type of tool retainer for temporarily holding a drill steel or similar device against; disengagement from the socket of the holder, so that the. drill. steel can be extracted from the drill hole.

In the accompanying drawings,

Figure 1 is a plan view of one embodiment of the invention,

Figure 2 is a side elevation of the same,

Figure 3 is a sectional view on, the hue 3--3 of Figure 1,

Figure 4c is a detail sectional view on the line 4& of Figure 2.

Similar reference numerals designate corresponding parts in. all the figuresor the drawings.

In the embodiment disclosed, the tool holder is designated 5, and may be of any suitable structure, having the usual socket for detachably receiving the rear end of a drill steel or other tool, a portion of which is shown at 6, this tool having a collar 7 thereon. The tool holder is provided with oppositely outstanding ears 8 through which are passed longitudinal bolts-9 that project beyond the ears and are disposed on opposite sides of the tool holder 5 in spaced relation thereto.

Supporting means are employed in the form of side arms 10 arranged parallel to the bolts 9, and having oilset rear ends or ears 11 slidably mounted on said bolts. The forward sliding movement of the ears 11 is resisted by coiled springs '12 on the bolts 9 which are interposed between the ears 11 and the front heads 13 of the bolts. The front ends of the supporting arms 10 terminate in eyes 14 through which is passed a transverse pivot bolt 15, and on this pivot bolt is journaleda retaining element in the form of a yoke 16 having a notch or opening 17 of sufficient size to permit the passage of the shank of the tool 6, and to prevent the passage of its collar 7. Thistool retaining element or yoke 16 is provided with divergent rearwardly extending ofiset yieldingfingers 18 terminating at theirrear ends in lnset hooks 19 that are adaptedto detachably embrace thearms 10 as willgbe clear by reference toFigure 4.

It will be obvious that with this structure it theyoke 16 is placed in the position shown by the drawings, it will be operative toprevent the disengagement of the.tool- 6 from the tool holder, as it will be in the:

path of movement of the collar 7 'and any 19 to passpoverthearms 10, andfthe yoke thus be swung out of the path ofthe collar, so that the tool '6 can be disengaged from the holder 5.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with tool holding means, of a retainer comprising a forwardly yielding support, a tool engaging element mounted on the support and movable thereon to and from an operative position to be engaged by a tool placed in the tool holding means, and locking means. offset from the tool engaging element and extending longitudinally of the support for holding the same in its aid operative position.

2. The combination with a tool holder, of

ing with the arm in rear of the mounting of the element thereon to secure the element against pivotal movement on the arm.

3. The combination with a tool holder, ol supporting means including a forwardly extending yieldingarm, atool retaining element pivoted on the arm in advance of the tool holder, and a finger ofiset from the element and extending longitudinally of the arm, said finger having a portion detachably interlocking with the arm to secure the element against material pivotal movement.

4;. The combination with a tool holder, of yielding supporting means mounted thereon and including a forwardly extending arm, a

transversely disposed tool retaining element pivoted on the arm, and a rearwardly extending locking finger carried by the element and having an ofliset hook portion that detachably interlocks with the arm to hold the retaining element in its operative position to be engaged by a tool.

5. The combination with tool holding means having a tool receiving socket and forwardly extending bolts, of forwardly extending arms having ofi'set rear ends slidable on the bolts, springs for resisting the sliding'movements of the arms, a transversely disposed tool retaining yoke pivotally mounted on the front ends of the arms. and rearwardly extending spring fingers carried by the yoke and having terminal hook portions that detachably interlock with the arms.

6. The combination with a tool holder, of supporting means mounted thereon and including a forwardly yielding arm, a tool retaining element movably mounted on the arm, and a device offset from the element and extending longitudinally of the arm, said device detachably bearing against the arm to stop the element in a position to be engaged by the tool.

7. The combination with a tool holder, of supporting means mounted thereon and including a forwardly extending and for wardly yielding arm, a tool retaining element pivoted on the arm, and a rearwardly extending finger carried by the element and arranged to bear against the arm to stop the element in a position to be engaged by the too S. The combination with a tool holder, of forwardly extending bolts engaged therewith, forwardly extending arms forwardly slidable on the bolts, springs resisting the forward movements of the arms, a tool retaining yoke pivoted on the arms, and rearwardly extending fingers carried by the yoke and arranged to bear against the arms to limit the swinging movement of the yoke.

In testimony whereof I aifix my signature in the presence of two witnesses.

WILLIAM HOSKIN.

Witnesses:

SULLIVAN V. JOHNSON, Enwn. L. OLDHAM. 

